<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,i) in goods_info.pics" :key="i">
				<image :src="item.pics_medium_url" mode="aspectFill" @click="preview(i)"></image>
			</swiper-item>
		</swiper>
		
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 商品信息主体区域 -->
			<view class="goods-info-body">
				<!-- 商品的名字 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">快递：免运费</view>
			
			<rich-text :nodes="goods_info.goods_introduce"></rich-text>
			
			<!-- 商品导航组件区域 -->
			<view class="goods_nav">
				<uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
			</view>
			
		</view>
	</view>
</template>

<script>
	import{mapState,mapMutations,mapGetters} from 'vuex'
	
	export default {
		computed:{
			...mapState('m_cart',['']),
			...mapGetters('m_cart',['total'])
		},
		watch:{
			//定义total监听器，指向一个配置对象
			total:{
				handler(newVal){
					const newOptions = JSON.parse(JSON.stringify(this.options));
					const findResult = newOptions.find(x => x.text === '购物车')
					if(findResult){
						findResult.info = Number(newVal)
						this.options = newOptions
					}
				},
				//immediate属性来声明此监听器，是否在页面初次加载完毕后立即调用
				immediate:true
			}
		},
		data() {
			return {
				goods_info:{},
				options: [{
					icon: 'shop',
					text: '店铺',
					infoBackgroundColor:'#007aff',
					infoColor:"red"
				}, {
					icon: 'cart',
					text: '购物车',
					info: 0
				}],
				buttonGroup: [{
					text: '加入购物车',
					backgroundColor: '#ff0000',
					color: '#fff'
					},
					{
					text: '立即购买',
					backgroundColor: '#ffa200',
					color: '#fff'
					}
				]
			};
		},
		onLoad(options){
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods:{
			...mapMutations('m_cart',['addToCart']),
			async getGoodsDetail(goods_id){
				const res = await uni.$http.get('/api/goodsdetail',{goods_id})
				if(res.statusCode !== 200)return uni.$showMsg()
				
				//res.data.data.goods_introduce = res.data.data.goods_introduce.replace(/<img /g,'<img style="display:block;"'/)
				
				this.goods_info = res.data.data
			},
			preview(i){
				uni.previewImage({
					current:i,
					urls:this.goods_info.pics.map(x => x.pics_big_url)
				})
			},
			onClick(e){
				if(e.content.text === '购物车'){
					uni.switchTab({
						url:'/pages/cart/cart'
					})
				}
			},
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					//组织商品信息对象
					//{goods_id,goods_name,goods_price,goods_count,goods_small_logo,goods_state}
					const goods = {
						goods_id:this.goods_info.goods_id,
						goods_name:this.goods_info.goods_name,
						goods_price:this.goods_info.goods_price,
						goods_count:1,
						goods_small_logo:this.goods_info.goods_small_logo,
						goods_state:true
					}
					//调用addToCart方法
					this.addToCart(goods)
				}
				
			}
		}
	}
</script>

<style lang="scss">
	swiper{
	width: 100%;
	image{
		display: flex;
		justify-content: center;
		align-items: center;
		width: 100%;
		height: 100%;
		
		}
	}
	
	.goods-info-box{
		padding: 10px;
		padding-right: 0;
		.price{
			color: #C00000;
			font-size: 18px;
			margin: 10px 0;
		}
		.goods-info-body{
			display: flex;
			justify-content: space-between;
			.goods-name{
				font-size: 13px;
				margin-right: 10px;
			}
			.favi{
				width: 120px;
				font-size: 12px;
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				border-left: 1px solid #efefef;
				color: gray;
			}
		}
		.yf{
			font-size: 12px;
			color: gray;
			margin: 10px 0;
		}
	}
	
	.goods_nav{
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		z-index: 999;
	}
	
	.goods-detail-container{
		padding-bottom: 50px;
	}

</style>
